Starting out in the early 2000s, one of Matthew King Yang's first roles placed him on the medical drama ER. After making appearances on popular television series The West Wing and Friends, King would begin voice acting, providing the voice of Illidan Stormrage in the World of Warcraft series. Shortly after his work on World of Warcraft, King captured one of the more notable roles of his career, being a recurring character on medical drama Strong Medicine for several seasons. While on Strong Medicine, King provided the voice of Sumaru in the Naruto television series and began his work on the crime drama Numb3rs, going on to appear in 14 episodes of the latter as a recurring character. More recently, King starred in the eighth season of crime series 24.[2]